JPH03213714A - Resin-made direct-acting guide unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The main summer tax and portion! The present invention provides a linear motion guide unit in which most or all of the constituent members are made of so-called high-performance engineering plastic, which is a resin with excellent heat resistance, chemical resistance, and other mechanical and physical strength. The present invention provides a resin linear motion guide unit that can be effectively used even under severe physical and chemical conditions, and has selectivity that can be adapted to a wider variety of uses.

Traditional linear motion guide units have limited components, such as the side plates attached to the casing, which are made of POM resin, PBT resin, PES resin, etc., and other components that require strength are It was manufactured from steel and iron. However, in recent years, many resins with physical and mechanical strength close to that of rope have been developed, and the applicant has already proposed the use of these new materials as an alternative to conventional steel members (particularly No. 1-211364 (hereinafter referred to as the "prior application resin unit").

The prior-application resin unit allows easy and accurate positioning of the direction change path, return path, and raceway surface, has low sliding resistance when rolling elements run, has a large amount of elastic deformation compared to steel, is lightweight, and has excellent alignment. It has the characteristics of being able to be used under rough conditions and even under special conditions, ie physically and chemically harsh conditions.

However, the resin unit of the earlier application had the following narrow selectivity: (1) Since the rolling element direction changing path was provided outside the casing, the side plate was essential in the entire unit. there were.

(2) The position of the rolling element return path was limited only to the horizontal direction of the casing side raceway groove.

(3) Fixation between the casing and the side plate was limited to snap-fit connection.

(4) The rolling elements were limited to balls.

(5) Raceway grooves were limited to two rows.

. The invention of the present application expands the range of the above-mentioned options and provides a more excellent unit that can be adapted to various uses. That is, (1) It is also possible to form the entire endless circulation path of the rolling elements in a single casing and to hold the rolling elements substantially without side plates.

■ The position of the rolling element return path can be freely selected to be diagonally above or below the casing raceway groove, realizing compactness of the entire unit and smooth direction change of the rolling elements.

■ It is also possible to form the casing by joining two members each having a half-mounted relief surface cut by the endless circulation path circulation surface.

■ The casing and side plate are fixed by fitting a cylindrical protrusion into the protrusion insertion hole and then using adhesive or other various fixing techniques.

■ In addition to balls, it is also possible to select cheaper rollers for the rolling elements.

■ It is also possible to have four or more rows of raceway grooves.

That is, the present invention solved the above problem by the following means.

1) In a resin linear motion guide unit consisting of a long track rail (1) and an inverted U-shaped casing (2) that slides over the rail via a number of rolling elements, the casing (2) ) in which the circulation surface of the endless circulation path for rolling elements is located symmetrically and at an angle with respect to the central vertical longitudinal section of the track rail (1).

2) In the resin linear motion guide unit according to the first aspect, each endless circulation path for rolling elements provided in the casing is formed by joining two members having a half-mounted relief surface cut by the circulation surface thereof. unit.

3) In the resin linear motion guide unit according to the second aspect, the two members having the semi-mounted relief surface forming the endless circulation path for the rolling elements are joined by a projection-to-hole type joining means provided at an appropriate position on the same surface. .

4) A resin linear motion guide unit consisting of a long track rail (1), an inverted U-shaped casing (2) that slides over the rail via a number of rolling elements, and a pair of side plates, The circulation surface of the endless circulation path for rolling elements provided in the casing (2) is located symmetrically and at an angle to the center vertical longitudinal section of the track rail (1), and the side plate (4) is on each of both end surfaces in the longitudinal axis direction of the casing,
They are joined by a protrusion-to-hole type joining means provided on the joining surface, and an arcuate direction change path (6) provided on the side plate,
- The above unit in which the rolling element raceway groove (2a) provided in the casing and the rolling element return hole (5) parallel thereto are connected at both free ends to form an endless circulation path for the rolling element.

5) A resin linear motion guide unit consisting of a long track rail (1), an inverted U-shaped casing (2) that slides over the rail via a number of rolling elements, and a pair of side plates, The circulation surface of the endless circulation path for rolling elements provided in the casing (2) is located symmetrically and at an angle to the central vertical longitudinal section of the track rail (1), and the casing (2) A chevron-shaped U-turn raceway bridge (3d) is formed symmetrically and integrally on both longitudinal end faces, and a rolling element raceway groove (2a) that opens on both end faces, and a rolling element return that extends parallel to the inside of the casing in relation thereto. Connect both ends of each hole (5) and connect the above chevron U-turn orbit bridge (3d).
is fitted in a snap fit manner into the arcuate direction change path (6) provided on the side plate (4) to form the direction change path (6).
The above-mentioned unit is characterized in that an inner guide raceway surface is formed to constitute an endless circulation path for rolling elements.

6) A resin linear motion guide unit consisting of a long track rail (1), an inverted U-shaped cross-section casing (2) that slides over the rail via a number of rolling elements, and a pair of side plates, The circulation surface of the endless circulation path for rolling elements provided in the casing (2) is located symmetrically and at an angle to the central vertical longitudinal section of the track rail (1), and the casing (2) A chevron-shaped U-turn raceway bridge (3d) is formed symmetrically and integrally on both longitudinal end faces of the casing, and a rolling element raceway groove (2a) that opens in a linear plane and a rolling element return hole that extends parallel to the inside of the casing in relation to it. (5) Both ends of each are connected, and the chevron-shaped U-turn track bridge (3d) is inserted and fixed into the arc-shaped direction change path (6) provided on the side plate (4), and the direction change path (6) is formed. In addition to forming an inner guide raceway surface, the side plate (4) and the end surface in the longitudinal axis direction of the casing are bonded by a projection-to-hole type joining means provided on their abutting surfaces to form an endless circulation path for rolling elements. The above unit is characterized by:

7) A resin linear motion guide unit consisting of a long track rail (I), an inverted U-shaped cross-sectional casing (2) that slides astride the rail via a number of rolling elements, and a pair of side plates, The circulation surface of the endless circulation path for rolling elements provided in the casing (2) is located symmetrically and at an angle to the center vertical longitudinal section of the track rail (1), and the side plate (4) is joined to each of the longitudinal axis direction end surfaces of the casing by a protrusion-to-hole type joining means provided on the joining surface, and an arcuate direction changing path (6) with a spacer provided on the side plate.
In this unit, the rolling element raceway groove (2a) provided in the casing and the rolling element return hole (5) parallel thereto are connected at both free ends to form an endless circulation path for the rolling element.

8) In the resin linear motion guide unit according to any one of items 3 to 4 and 6 to 7, the protrusion-to-fitting-hole type connecting means is a substantially cylindrical positioning protrusion protruding from the longitudinal end surface of the casing. (3a) and a fitting hole (4a) provided at a corresponding position on the side plate to be joined to the protrusion (3a).
4a) is the above unit fixed by an adhesive part.

9) In the resin linear motion guide unit according to any one of items 3 to 4 and 6 to 7, the protrusion-to-fitting-hole type connecting means has a substantially cylindrical diameter-enlarged diameter that protrudes from the longitudinal end surface of the casing. It consists of a protrusion (3a') having a section and a reduced diameter fitting hole (4a') provided at a corresponding position on the side plate to be joined to the protrusion (3a').
a') is fixed to the fitting hole (4a) in a press fit snap fit manner.

10) The resin linear motion guide unit according to any one of items 1 to 9 above, wherein the rolling elements are balls made of plastic, stainless steel, glass, ceramic, or the like.

11) In the resin linear motion guide unit according to any one of Items 1 to 10, the track rail (1), the casing (2), the side plate (4), and the circulation path spacer are made of PEE.
The above unit is formed from high performance engineering plastics such as K resin, PES resin, PPS resin, PI resin, PAI resin, modified PPO resin, and PEI resin.

12) The resin linear guide unit according to any one of items 1 to 9 above, wherein the rolling elements are rollers made of plastic, stainless steel, glass, ceramic, or the like.

13) In the unit according to any one of items 1 to 12 above, two or more rows of rail side raceway grooves are provided on the side surface of the track rail, and corresponding raceway grooves are provided on the corresponding wall surface of the lower internal recess (2c) of the casing. The above unit provided.

Fig. 1 is a projected view of the first embodiment of the linear motion guide unit of the present invention, in which raceway grooves for rolling elements ( A rectangular casing 1a) is formed in a cross-sectional shape, and has a lower inner recess (2C) having an approximately U-shaped cross section and an inverted U-shape, the shape approximately corresponding to the upper part of the rectangular cross-section of the track rail (1). (2) is
The said track rail (1) by its lower internal recess (2c)
It is provided so as to be slidably mounted on the upper part of the .

Each of the leg portions forming both arm-facing side walls defined by the lower internal recess (2C) of the casing (2) has a line passing through the central axis of the rolling element endless circulation path (5) formed inside the leg portion. A-A
It consists of two parts (Fig. 3.4) divided by a plane containing )
(Fig. 4) - They are integrally bonded by a protrusion-to-hole locking adhesive means consisting of a fitting hole (a) (Fig. 3). The adhesive surface forms the endless circulation path (5).

The protrusion-to-hole type locking adhesive means has a positioning protrusion (3a
) and a pair of fitting holes (a), both of which may be fixed by the adhesive side, or an adhesive means consisting of a pair of snap-fit protrusions and fitting holes in which the protrusions have enlarged diameter parts is adopted. You can.

As is clear from FIG. 2, which shows a front view of the unit shown in FIG. A casing side raceway groove (2a) is formed extending in parallel in the longitudinal direction, and a large number of rolling elements, in this embodiment, are arranged between the opposing rail side raceway groove (Ia) and the casing side raceway groove (2a). Balls (8) or transfer rollers (8') (not shown) are inserted, thus allowing free reciprocating sliding movement on the rail of the casing (2) mounted astride on the track rail l. As is clear from FIG. 3, which shows the upper half of the casing leg as seen from the A-A cross section in FIG. A rolling element return path (5) is provided in the longitudinal direction, and extends in parallel to the casing side raceway groove (2a) provided on the inner surface of both radiation side walls of the internal recess (2c) of the casing (2). The return path (5) and the raceway groove (2a) are connected by a direction change path (6) provided in the same casing (2), and a pair of endless circulation paths for the rolling element balls and rollers are connected to the casing (2). ) is formed at the horizontal cross-sectional position of the area.

Therefore, when adopting the configuration shown in Figures 1 to 4, the entire endless circulation path (5) is contained within the casing (2), so unlike the resin unit of the prior application, no side plate is substantially required. This reduces the number of parts and allows for easier and cheaper assembly.

On the other hand, depending on the application, it may be convenient to include the side plates (4) in the unit, such as when strength is required on both end faces in the longitudinal direction of the unit, and in such cases, the side plates may be provided. The casing (2) is integrally fixed to both longitudinal ends of the casing (2).
A side plate (4) having a cross section matching that of 2) may be provided, this side plate having no recess such as a turning path, etc., merely for reinforcing both longitudinal ends of the casing in FIG. In addition, each of the side plates (4) may be provided with an arcuate turning path (
6) are provided to connect each direction change path (6) to the casing side raceway groove (2a) and the corresponding rolling element return path (5).
) may be connected at both ends in the longitudinal direction to form a rolling element endless circulation path.

Furthermore, in Fig. 1 above, the unit (2) is composed of two parts divided along the plane including the line (2f), but it is possible to mold the unit (2) as a single unit without dividing it. Of course it is also possible. And, just like the above, the presence or absence of side plates can be selected as desired.

FIG. 5 shows a second embodiment of the invention in which the circulation surface of the endless circulation path of rolling elements in the casing is located in the casing leg symmetrically at an angle α with respect to the central vertical cross section X of the track rail.

This second embodiment includes a track rail (1), a rail side track (1a), a casing side track (2a), a rolling bearing combination system of the track rail (1) and a casing (2), and a ball The structure of the members indicated by the same reference numerals as the members of the first embodiment, such as the return path (5), etc., is the same, except that the dividing direction of the legs of the casing (2) has an angle α and is not horizontal. Only different.

The following is a second embodiment of the present invention excluding common configurations with the first embodiment.
A special configuration of the embodiment will be described with reference to the drawings.

The configuration of the second embodiment of the present invention includes the above casing (2)
The above casing side raceway groove (2
a) Rolling element return paths (5) that correspond to each other and are spaced apart at a constant angle and extend parallel to the longitudinal direction of the casing.
In each of the longitudinal ends of the casing (2), an arcuate turning path (6) is provided on the longitudinal axis plane, which extends obliquely at the above-mentioned constant angle (α) at a horizontally symmetrical position on the cross section. The casing side raceway groove (
2a) and the corresponding rolling element return path (5) are connected at both ends in the longitudinal direction to form an endless rolling element circulation path.

Each of the legs forming opposite side walls defined by a lower internal recess (2C) of said casing (2) is connected to a track rail (1).
) is composed of two parts divided by a plane including an oblique line having an arbitrary angle α with respect to the central perpendicular bisector XX (the dividing line is 2f').

The second embodiment of the invention likewise has most or all of its components, namely the track rail (1), the casing (2),
The side plates (4) etc. are made of high performance engineering plastics such as PEEK resin, PES resin, PPS resin, PI resin, etc.
It is characterized by being formed from PAI resin, modified PPO resin, PEI resin, etc.

Therefore, even when adopting the configuration shown in Figure 5, the endless circulation path (
5) Since the entire unit is contained within the casing (2), unlike the resin unit of the prior application, there is substantially no need for side plates.

Furthermore, in FIG. 5 above, the unit was composed of two parts divided by a plane including the line (2f'), but
Of course, it is also possible to mold the unit (2) as a single unit without performing the division. And, just like the above, the presence or absence of side plates can be selected as desired.

In the second embodiment shown in FIG. 5, since the non-111i circulation path runs obliquely within the casing, the casing can be made more compact in the transverse direction of the casing than the first embodiment.

Incidentally, as shown in FIG. 7, the angle α can be selected arbitrarily and conveniently depending on the application.

Unlike the first embodiment of the present invention, the third embodiment shown in Figs. A diagonal chevron U-turn track bridge (3d) connecting the raceway groove (2a) is integrally provided, and the chevron U-turn track bridge (3d) is provided on the side plate (4). ) is a unit that is inserted and fixed in a snap-fit manner in the inside of the turning path (6) to form the inner guide raceway surface of the direction change path (6), thereby configuring an endless circulation path for rolling elements.

Incidentally, the oblique angle of the chevron-shaped bridge (3d) can be selected arbitrarily and conveniently depending on the application as shown in FIG. 7, and it can also be set horizontally as shown in FIG. 2.

Furthermore, in order to more accurately and reliably position the casing and side plates, a positioning guide protrusion (3e - Fig. 8) is provided on the diagonal chevron U-turn track bridge (3d), and this is placed on the end surface of each side plate (4). It can be fitted and fixed into the corresponding positioning guide groove (4e) provided on the opening edge of the direction change path (6), or it can be fitted with a projection-to-hole type on the abutment surface of the casing and the side plate as shown in Figures 8 and 9. It may also be chosen to provide joining means in place.

Furthermore, in the present invention, instead of the chevron-shaped U-turn track bridge provided integrally in the casing, any equivalent means with the same effect can be adopted, such as a casing side track groove (2a) opening at both ends of the casing and an open running moving body return. JS(
5), without forming a chevron-shaped bridge, a U-turn path is formed in a continuous horizontal arc shape within the both end surfaces, and the side plates simply cover the outer wall surfaces of both ends of this U-turn path. Alternatively, a cylindrical projection (3a) may be integrally provided on the casing abutting end surface of the side plate, and a hole for fitting the projection (3a) may be provided at a position corresponding to the casing end surface to provide an endless track. ) and the side plate (4) is also within the scope of the invention.

Next, FIGS. 10 to 12 show a fourth embodiment of the present invention, in which a plurality of substantially cylindrical projections (3a) projecting in the longitudinal direction are provided at predetermined locations on both longitudinal end surfaces of the casing (2). The cylindrical projections (3a
) Snap-fit type protrusion insertion hole (4a) at the corresponding position
will be established. The diversion path (6), which is provided at a horizontally symmetrical position in the cross section of each side plate (4) and is oblique in cross section and arcuate in the longitudinal axis plane, is provided with a notch having a circular horizontal cross section within each side plate. It is formed by fitting and fixing a circulation path spacer (7) having a reduced-diameter semicircular horizontal cross section into the spacer. It is a unit in which the side plates (4) are integrally fixed to both end faces of the casing (2) in a snap fit manner to form an arcuate direction change path (6).

As in FIG. 7, the oblique angle of the direction change path (6) can be arbitrarily selected depending on the application, and it can also be horizontal as in FIG. 2.

Although the first to fourth embodiments have been described above, the present invention is not limited thereto, and equivalent modifications due to resin properties can be easily made by those skilled in the art within the scope of the present invention. It will be done.

The method of fixing the casing and the side plate, or the upper and lower parts of the casing legs shown in Figs. In all embodiments of the present invention, the snap-fitting method 7) in which a diameter portion is provided can be arbitrarily and suitably selected depending on the application.

Further, as another embodiment of the cylindrical projection, a cross slit may be provided at the tip of the projection to increase the elastic deformation rate of the projection and prevent plastic deformation during fitting (FIG. 15).

Furthermore, balls or rollers made of plastic, stainless steel, glass, ceramic, etc. can be selected as the rolling elements, and the above track rail (1), casing (2), side Fi (
4) and chevron bridge or circulation path spacer is PE
EK resin, PES resin, PPS resin, PI resin, PAI
It is formed from high-performance engineering plastics such as resin, modified PPO resin, and PEI resin.

Furthermore, by providing four or more rows of raceway grooves, it is possible to easily apply a larger load (because the unit is made of resin).

Furthermore, the opening width of the line groove is made slightly smaller than the maximum diameter of the rolling element to prevent the rolling elements, that is, the balls or rollers in the endless circulation raceway inside the casing from falling out of the casing side raceway groove when the casing is removed from the rail member. It is also an obvious embodiment of the invention to maintain the .

As a result, by making the main component of the linear motion guide unit made of high-performance engineering resin, similar to the resin unit of the earlier patent application, it becomes possible to employ, for example, a simple snap-fit type concave-convex fitting method, which simplifies the molding process of each component. Furthermore, it has all the effects of the resin unit of the prior application, such as being able to drastically reduce the number of constituent parts, reducing weight and manufacturing cost.

The effects specific to the present invention are listed below.

1) Since side plates are not required, it is convenient when miniaturization of the unit is required, and a unit with side plates may be selected only when rigidity of the unit is required.

2) By selecting the oblique return path, the entire unit can be made more compact.

3) The casing itself can be either single molded or multiple parts joined depending on the application.

4) Various fixing techniques can be adopted depending on the application.

5) It is also possible to select a cheaper unit that uses rollers as rolling elements.

6) It is also possible to choose to have four or more rows of raceway grooves to load a larger load.

[Brief explanation of drawings]

1 is a projected view of the first embodiment of the resin linear motion guide unit of the present invention; FIG. 2 is a front view of the unit shown in FIG. 1, showing the endless circulation path of the rolling element poles with virtual dotted lines; The figure shows the upper half raceway groove relief surface of the casing leg as seen from the A-A cross section of Figure 2, that is, the orbital circulation surface of the rolling element, and Figure 4 shows the upper half of the casing leg connected to the upper half of Figure 3 for endless circulation. Figure 5 is a projected view of the lower half of the casing leg that completes the track rail, clearly showing the long track relief surface. FIG. 6 is a projection view of the lower half of the casing leg corresponding to FIG. 4 forming the endless circulation path of FIG. FIG. 7 is a front view showing the relief surface of the lower half of the casing according to the present invention. FIG. A projection view of the casing of the example,
An angled chevron U-turn track bridge is shown in Figure 9.
A projected view shows a side plate having an angled track surface direction change path that fits with the chevron-shaped U-turn bridge on the end face of the casing of the third embodiment shown in the figure, and FIG. 10 shows the casing and track of the fourth embodiment of the present invention. A front view of the rail combination is shown with the side plate removed, FIG. 11 is a projected view of the casing of the embodiment shown in FIG. 10, and FIG. 12 is a combination with the casing of FIG. 14 is a projection view of a side plate having a rolling element direction changing path with a spacer forming a path, and FIG.
The figure is an elevational view of a cylindrical protrusion for fixing the side plate provided on the casing in each embodiment of the present invention, and FIG. 15 is a projected view of a modification of the protrusion shown in FIGS. 13 and 14. In each drawing, 1...Long track rail, 1a-Rail side raceway groove, lb...Rail side mounting hole, 2...Casing, 2a...Casing side track groove, 2b...Casing Side mounting hole, 2cm casing lower internal recess,
3a...Cylindrical projection, 3b...Cylindrical projection with cross slit, 3a'...Cylindrical projection with enlarged diameter part,
3c... Tapered protrusion enlarged diameter part, 3d... Yamagata U
Turn track bridge, 3e... Positioning guide projection, 4... Side plate, 4a... Projection fitting hole, 4b
...Side plate leg, 4e...Positioning guide groove, 5.
...Rolling element return hole, 6...Direction change path, 7
...Circulation path spacer, 7a...Spacer base flange, 8...Rolling element pole, 10...Linear motion guide unit.

Claims (1)

[Claims] 1) A long track rail (1), an inverted U-shaped casing (
2), in which the circulation surface of the endless circulation path for rolling elements provided in the casing (2) is symmetrical with respect to the central vertical longitudinal section of the track rail (1). Units located at an angle. 2) In the resin linear motion guide unit according to claim 1,
Each of the endless circulation paths for rolling elements provided in the casing is a unit formed by joining two members having a half-mounted relief surface cut by the circulation surface. 3) In the resin linear motion guide unit according to claim 2,
In the unit described above, the two members having the semi-mounted relief surface forming the endless circulation path for the rolling elements are joined by a projection-to-hole type joining means provided at an appropriate position on the same surface. 4) A long track rail (1), an inverted U-shaped casing (
2) and a pair of side plates (4), the circulation surface of the endless circulation path for rolling elements provided in the casing (2) is aligned with the center vertical longitudinal section of the track rail (1). The side plate (4) is located symmetrically and at an angle with respect to the plane, and is joined to each of both end faces in the longitudinal axis direction of the casing by a protrusion-to-hole type joining means provided on the joining face. An arcuate direction changing path (6) provided on the side plate connects the rolling element raceway groove (2a) provided in the casing and the rolling element return hole (5) parallel to it at both free ends, thereby creating an infinite rolling element The above unit forming a circulation path. 5) A long track rail (1), an inverted U-shaped casing (
2) and a pair of side plates (4), the circulation surface of the endless circulation path for rolling elements provided in the casing (2) is aligned with the center vertical longitudinal section of the track rail (1). A rolling element raceway located symmetrically and at an angle with respect to the plane, with chevron-shaped U-turn raceway bridges (3d) symmetrically and integrally formed on both longitudinal end faces of the casing (2), and openings on both end faces. Both ends of the groove (2a) and the rolling element return hole (5) extending parallel to the inside of the casing are connected, and the above-mentioned chevron-shaped U-turn raceway bridge (3) is connected.
d) is provided on the side plate (4) in an arcuate direction change path (6).
The direction change path (
6) The unit described above is characterized in that the inner guide raceway surface of 6) is formed to constitute an endless circulation path for rolling elements. 6) A long track rail (1), an inverted U-shaped casing (
2) and a pair of side plates (4), the circulation surface of the endless circulation path for rolling elements provided in the casing (2) is aligned with the center vertical longitudinal section of the track rail (1). A rolling element raceway groove that is located symmetrically and at an angle to the surface, has chevron-shaped U-turn raceway bridges (3d) symmetrically and integrally formed on both longitudinal end surfaces of the casing (2), and is open to the surface. (2a) and the corresponding rolling element return hole (5) extending parallel to each other in the casing.
is fitted and fixed in the arcuate direction change path (6) provided on the side plate (4) to form the inner guide raceway surface of the direction change path (6), and also to form the inner guide raceway surface of the direction change path (6), and to The above-mentioned unit is characterized in that the end faces are adhered to each other by a projection-to-hole type joining means provided on the abutting surfaces to form an endless circulation path for rolling elements. 7) A long track rail (1), an inverted U-shaped casing (
2) and a pair of side plates (4), the circulation surface of the endless circulation path for rolling elements provided in the casing (2) is aligned with the center vertical longitudinal section of the track rail (1). The side plate (4) is located symmetrically and at an angle with respect to the plane, and is joined to each of both end faces in the longitudinal axis direction of the casing by a protrusion-to-hole type joining means provided on the joining face. Arc-shaped turning path with spacer installed on the side plate (
6), the rolling element raceway groove (2a) provided in the casing
, and the rolling element return holes (5) parallel thereto are connected at both free ends to form an endless circulation path for the rolling elements. 8) In the resin linear motion guide unit according to any one of claims 3 to 4 and 6 to 7, the protrusion-to-fitting-hole type connecting means is a substantially cylindrical positioning protrusion protruding from the longitudinal end surface of the casing. (3a) and a fitting hole (4a) provided at a corresponding position on the side plate to be joined, and when the side plate and the casing are bonded, the protrusion (3a) and the fitting hole (4a)
a) is the above unit fixed by an adhesive part. 9) In the resin linear motion guide unit according to any one of claims 3 to 4 and 6 to 7, the protrusion-to-fitting-hole type connecting means has a substantially cylindrical enlarged diameter that projects from the longitudinal end surface of the casing. It consists of a protrusion (3a') having a section and a reduced diameter fitting hole (4a') provided at a corresponding position on the side plate to be joined to the protrusion (3a').
') into the fitting hole (4a') in a snap-fit manner. 10) The resin linear motion guide unit according to any one of claims 1 to 9, wherein the rolling elements are balls made of plastic, stainless steel, glass, ceramic, or the like. 11) In the resin linear motion guide unit according to any one of claims 1 to 10, the track rail (1), casing (2), side plate (4), and circulation path spacer are made of PEEK resin, PES resin, or PPS resin. , PI resin, PAI resin,
The above unit is formed from high-performance engineering plastics such as modified PPO resin and PEI resin. 12) The resin linear guide unit according to any one of claims 1 to 9, wherein the rolling elements are rollers made of plastic, stainless steel, glass, ceramic, or the like.